I think I've come across a bug in the command line switches. From "R --help" -------------------------------- --vanilla Combine --no-save, --no-restore, --no-site-file, --no-init-file and --no-environ --slave Make R run as quietly as possible -q, --quiet Don't print startup message ------------------------------- So, if I understand this correctly, I should be able to call: "/usr/bin/R --vanilla --slave --quiet <test.r" R should then run with NO OUTPUT unless I choose to print something from my code. This works, except it is still printing the startup message. It appears as if I can call either --slave or --quiet, but both together doesn't work. (Just the slave option seems used.) Am I missing something or is this a bug? -N